1
JEE Main 2024 (Online) 9th April Evening Shift
MCQ (Single Correct Answer)
+4
-1

The incorrect statement regarding ethyne is

A
The carbon - carbon bonds in ethyne is weaker than that in ethene
B
Both carbons are sp hybridised
C
The $$\mathrm{C}-\mathrm{C}$$ bonds in ethyne is shorter than that in ethene
D
Ethyne is linear
2
JEE Main 2024 (Online) 9th April Morning Shift
MCQ (Single Correct Answer)
+4
-1

Relative stability of the contributing structures is :

JEE Main 2024 (Online) 9th April Morning Shift Chemistry - Basics of Organic Chemistry Question 23 English

A
(II) > (I) > (III)
B
(III) > (II) > (I)
C
(I) > (III) > (II)
D
(I) > (II) > (III)
3
JEE Main 2024 (Online) 9th April Morning Shift
MCQ (Single Correct Answer)
+4
-1

Correct order of basic strength of Pyrrole JEE Main 2024 (Online) 9th April Morning Shift Chemistry - Basics of Organic Chemistry Question 26 English 1, Pyridine JEE Main 2024 (Online) 9th April Morning Shift Chemistry - Basics of Organic Chemistry Question 26 English 2 and Piperidine JEE Main 2024 (Online) 9th April Morning Shift Chemistry - Basics of Organic Chemistry Question 26 English 3 is :

A
Pyridine > Piperidine > Pyrrole
B
Pyrrole > Piperidine > Pyridine
C
Pyrrole > Pyridine > Piperidine
D
Piperidine > Pyridine > Pyrrole
4
JEE Main 2024 (Online) 9th April Morning Shift
MCQ (Single Correct Answer)
+4
-1

For the given compounds, the correct order of increasing $$\mathrm{pK}_{\mathrm{a}}$$ value :

JEE Main 2024 (Online) 9th April Morning Shift Chemistry - Basics of Organic Chemistry Question 24 English

Choose the correct answer from the options given below :

A
(E) $$<(\mathrm{D})<(\mathrm{C})<(\mathrm{B})<(\mathrm{A})$$
B
(B) $$<(\mathrm{D})<(\mathrm{A})<(\mathrm{C})<(\mathrm{E})$$
C
(D) < (E) < (C) < (B) < (A)
D
(E) $$<(\mathrm{D})<(\mathrm{B})<(\mathrm{A})<(\mathrm{C})$$
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